The Cedar Valley Formation is a geologic formation in Iowa. It preserves fossils dating back to the Devonian period. No type locality has ever been designated for this formation, but it is best known for limestone and dolomite exposures in and around Johnson County, Iowa. The formation is exposed in numerous road cuts, quarries and valley walls over much of north-east and north-central Iowa.[1][2]
| Cedar Valley Formation | |
|---|---|
| Stratigraphic range: Devonian | |
| Type | Formation |
| Underlies | Lime Creek Formation |
| Location | |
| Region | Iowa |
| Country | United States |
See also edit
References edit
- ^ Bill J. Bunker, Brian J. Witzke and Jed Day, Upper Cedar Valley Stratigraphy North Central Iowa Lithograph City Formation, Guidebook 44, Geological Society of Iowa, Apr. 27, 1986.
- ^ Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 17 December 2021.
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